Adrianus ("Aad") Johannes Bak (Rotterdam, South Holland, 18 June 1926 - 16 January 2009 Schiedam, South Holland) was a Dutch professional football player.
Bak started his career in the team of Excelsior. He played for Holland Sport during the 1954âÂÂ55 season. Between 1955 and 1962, he played in the midfielder position for Feijenoord. While there, he won two Dutch national championships, in 1961 and 1962.
Bak received his only cap in the Netherlands national football team in 1956.